Apparatus for cutting bricks and the like from continually-fed material.



N. FREDRIKSSON.

APPARATUS FOR CUTTING BRICKS AND THE LIKE FROM CONTINUALLY FED MATERIAL.

APPLICATION FILED OCT. 2!.1914.

Patented Feb. 6, 1917.

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NILS FREDBIKSSON, 0F SVEDALA, SWEDEN.

APPARATUS FOR CUTTING BRICKS AND THE LIKE FROIII CONTINUALLY-FED MATERIAL.

Specification of Letters Patent.

Patented Feb. 6, 1917.

Application filed October 21, 1914. Serial No. 867,706.

To all whom it may concern:

Be it known that I, NILs I nnnmnssorv, a subject of the King of Sweden, residing at Svedala, in the Kingdom of Sweden, have invented new and useful Improvements in Apparatus for Cutting of Bricks and the like from Continually-Fed Material, of which the following is a specification, reference being had to the drawing accompanying and forming a part hereof.

This invention relates to machines for automatic cutting of bricks from a continually fed string of clay or the like, and has for its object, a greater simplicity, reliability and output than can be obtained with previously known constructions.

The machine is of that class, in which the cutting is performed by a wire, stretched ually rotating disk. In the machines of this kind, as hitherto known, the frames have been so located, or of such length, that each frame during the rotation of the disk struck against the next frame and was thus compelled to swing over in the direction of the rotation of the disk. This had the disadvantage of unsteady working and consequently lower speed. According to my invention the frames are made of such length, or the distances between the same are such that the cutting-wires during the rotation of the disk all the time remain below the points around which the frames are swinging, whereby the advantages will be gained that the apparatus runs steadier and may be driven at much higher speed than usual.

The accompanying drawing shows a form of cu'ttingdevice according to the invention.

Figure 1 is a side view, Fig. 2 an end view and Fig. 3 a top View.

- The string of clay pressed out from a brick-machine is supported in usual manner by a belt 2, running over the two pulleys 8 and 4, of which the pulley 3, by means of an automatically operated friction clutch, is connected with a driving-shaft in such manner, that the speed of the pulley will correspond to the speed of the bar of clay. In the continuation of the belt '2 the bar of clay is supported by a slideway, consisting of a plate or the like 5. Above this is located the cutting-device proper, and in the extension of the slide plate 5 is a belt conveyer 6, having a greater speed than the belt 2.

The cutting-device consists of one or more frames 7, each provided with a cutting-wire 8 and movably suspended from pivots or shafts 9, secured to a rotating disk 10, which is driven from the pulley 3 by means of a chain, a train of gears or the like, so that its speed always is in right proportion to the s aedof the belt 2 carrying the bar of clay 1. if the bricks are to be rectangular, the shaft ll of the disk 10, the shaft or shafts 9 secured to the disk 10, and the cutting-wires 8 should be parallel with one another, and perpendicular to the direction of movement of the bar of clay.

The distance between the shafts 9 are so proportioned, that each of the frames 7 can be freely turned around. Influenced by their own weight, the frames 7 hang perpendicularly down from the shafts 9 and maintain this position when the disk 10 revolves, so that the cutting-wires during the rotation of the disk all the time remain below the axis around which the frame 01' frames are swinging. The position of the cutting-device relatively to the bar of clay is such, that during this movement the wires 8 stretched in the frames 7 will cut the bar of clay. In order to obtain a cut of the right direction, the arms of the frames are being guided during their downward movement by means of a suitably shaped guideway 12. The cutting-wire 8 will then come close to the edge of the plate 5, which will thus prevent the cutting-wire from tearing the under side of the bar of clay, when cutting through the same. l Vhen the bar has been out through the severed brick will rest on the belt 6; as this belt is moving with greater speed than the bar of clay, it will remove the severed. brick from the bar. In the thus obtained space between the first severed brick and the bar of clay, the cutting-wire 8 will have suflicient space, to return upward at the continued rotation of the disk 10 without touching either the bar of clay or the severed brick. The frame 7 is meanwhile guided by the member 13. hen. the wire has been lifted above the bar of clay the frame is freely suspended and. moves, during the continued rotation of the disk 10, over to the starting position for repeated cutting. In case that, for some reason, the frame does not move sufficiently smoothly to be kept straight down by its own weight and in order to prevent unnecessary swinging of the same, there is se cured, outside the path of the shafts 9, a spring or the like 14 which will come in contact with a projection 15 on the frames 7, and thereby force these to swing against the guides 12 in due time.

Inasmuch as the shafts 9 are free at one end it is possible at any time during the working of the machine, to remove any one of the cutting-frames and replace it with another. Consequently new cutting-wires can be put in, when necessary, without the machine having'to be stopped.

Having now described my invention, and how it may be carried out what I claim and desire to secure by Letters Patent is:

1. In a machine of the character described, the combination of a rotary.sup port, shafts secured with one of their ends to the support and having their other ends free, and pendulous cutting frames of less length than the distance between the shafts and loosely threaded on said shafts, for the purpose of an easy removal of the frames from the shafts and of allowing each frame to swing around its shaft without being hindered by adjacent shafts, substantially as set fort 2. In a machine of the character described, the combination of a rotary support, shafts secured with one of their ends to the support and having their other ends free, pendulous cutting frames of less length than the distance between the shafts and loosely threaded on said shaft for securing an easy removal of the same, a guide for the downward movement of the frames, said guide adapted to direct the movement of the cutting-wire through the bar of clay, another guide adapted to direct the upward movement of the cutting-wire so that it will touch neither the bar of clay nor the severed brick, and means for removing the severed brick from the bar of clay, substantially as and for the purpose set forth.

3. In a machine of the character described, the coflabination of a rotary support, shafts secured with one of their ends to the support and having their other ends free, pendulous cutting frames of less length than the distance between the shafts and loosely threaded on said shaft for se curing an. easy removal of the same, a guide for the douuiward novement of the frames, said guide adapted to direct the movement of the cutting-wire through the bar of clay, another guide adapted to direct the upward movement of the cutting-wire so that it will touch neither the bar of clay nor the severed brick, means for feeding the bar of clay, and means adjacent to said guides for removing the severed brick from the bar of clay, said means being arranged to operate at a higher 7 rate of speed than the feeding means for the bar of clay, substantially as and for the purpose set forth.

N ILS FREDRIKSSON.

Witnesses T. OHLSON, ROBERT GUsTAFsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, ID. G. 

